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<div class="header">
  <div class="headertitle">
<div class="title">qwt_plot_glcanvas.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_plot_glcanvas.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;qwt_plot.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;qwt_painter.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160; </div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;qcoreevent.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;qpainter.h&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;qpainterpath.h&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;qglframebufferobject.h&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160; </div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="keyword">namespace</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;{</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="keyword">class </span>QwtPlotGLCanvasFormat : <span class="keyword">public</span> QGLFormat</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    {</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;      <span class="keyword">public</span>:</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;        QwtPlotGLCanvasFormat()</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;            : QGLFormat( QGLFormat::defaultFormat() )</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;        {</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;            setSampleBuffers( <span class="keyword">true</span> );</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        }</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    };</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;}</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="keyword">class </span>QwtPlotGLCanvas::PrivateData</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;{</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    PrivateData()</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;        : fboDirty( true )</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        , fbo( NULL )</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    {</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    }</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; </div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    ~PrivateData()</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    {</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        <span class="keyword">delete</span> fbo;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    }</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; </div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keywordtype">bool</span> fboDirty;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    QGLFramebufferObject* fbo;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;};</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#adc7704723f078ff57243a2e2fc217832">   56</a></span>&#160;<a class="code" href="class_qwt_plot_g_l_canvas.html#adc7704723f078ff57243a2e2fc217832">QwtPlotGLCanvas::QwtPlotGLCanvas</a>( <a class="code" href="class_qwt_plot.html">QwtPlot</a>* plot )</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    : QGLWidget( QwtPlotGLCanvasFormat(), plot )</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    , <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html">QwtPlotAbstractGLCanvas</a>( this )</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;{</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    init();</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;}</div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#afcfc7a4b768e084f5331fb182f6f1318">   69</a></span>&#160;<a class="code" href="class_qwt_plot_g_l_canvas.html#adc7704723f078ff57243a2e2fc217832">QwtPlotGLCanvas::QwtPlotGLCanvas</a>( <span class="keyword">const</span> QGLFormat&amp; format, <a class="code" href="class_qwt_plot.html">QwtPlot</a>* plot )</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    : QGLWidget( format, plot )</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    , <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html">QwtPlotAbstractGLCanvas</a>( this )</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;{</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    init();</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;}</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#a330939a56e289c42bcfbee2d82ef8347">   77</a></span>&#160;<a class="code" href="class_qwt_plot_g_l_canvas.html#a330939a56e289c42bcfbee2d82ef8347">QwtPlotGLCanvas::~QwtPlotGLCanvas</a>()</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;{</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <span class="keyword">delete</span> m_data;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;}</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160; </div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="keywordtype">void</span> QwtPlotGLCanvas::init()</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;{</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    m_data = <span class="keyword">new</span> PrivateData;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160; </div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="preprocessor">#if 1</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    setAttribute( Qt::WA_OpaquePaintEvent, <span class="keyword">true</span> );</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#a15748428948a5ea5594309862c898a8c">setLineWidth</a>( 2 );</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#adb37aa5c62dc82352a9ed0c596e4e136">setFrameShadow</a>( QFrame::Sunken );</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#a94191d6d1e982de669ea9dfcc82b6a27">setFrameShape</a>( QFrame::Panel );</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;}</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160; </div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#ac2f0b18dd1b26db455a57599049c69b6">  100</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_g_l_canvas.html#ac2f0b18dd1b26db455a57599049c69b6">QwtPlotGLCanvas::paintEvent</a>( QPaintEvent* event )</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;{</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    QGLWidget::paintEvent( <a class="code" href="class_qwt_plot_g_l_canvas.html#aa46f9d209bc4d7e862bfdc4b5aeb1fdb">event</a> );</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;}</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160; </div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#aa46f9d209bc4d7e862bfdc4b5aeb1fdb">  110</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_qwt_plot_g_l_canvas.html#aa46f9d209bc4d7e862bfdc4b5aeb1fdb">QwtPlotGLCanvas::event</a>( QEvent* event )</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;{</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">bool</span> ok = QGLWidget::event( <a class="code" href="class_qwt_plot_g_l_canvas.html#aa46f9d209bc4d7e862bfdc4b5aeb1fdb">event</a> );</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160; </div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_plot_g_l_canvas.html#aa46f9d209bc4d7e862bfdc4b5aeb1fdb">event</a>-&gt;type() == QEvent::PolishRequest ||</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <a class="code" href="class_qwt_plot_g_l_canvas.html#aa46f9d209bc4d7e862bfdc4b5aeb1fdb">event</a>-&gt;type() == QEvent::StyleChange )</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    {</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        <span class="comment">// assuming, that we always have a styled background</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="comment">// when we have a style sheet</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        setAttribute( Qt::WA_StyledBackground,</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;            testAttribute( Qt::WA_StyleSheet ) );</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    }</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160; </div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <span class="keywordflow">return</span> ok;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;}</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160; </div>
<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#af2bf82a971fcea76dab92da15a859c67">  131</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_g_l_canvas.html#af2bf82a971fcea76dab92da15a859c67">QwtPlotGLCanvas::replot</a>()</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;{</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#a9618a6dd76617768afefd23e5f16e559">QwtPlotAbstractGLCanvas::replot</a>();</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;}</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160; </div>
<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#a7a3ee293ae9564bce107bf7575edf10d">  137</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_g_l_canvas.html#a7a3ee293ae9564bce107bf7575edf10d">QwtPlotGLCanvas::invalidateBackingStore</a>()</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;{</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    m_data-&gt;fboDirty = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;}</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160; </div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="keywordtype">void</span> QwtPlotGLCanvas::clearBackingStore()</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;{</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="keyword">delete</span> m_data-&gt;fbo;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    m_data-&gt;fbo = NULL;</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;}</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160; </div>
<div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#a525fca9ded8253c67ce701a76bcc963e">  157</a></span>&#160;QPainterPath <a class="code" href="class_qwt_plot_g_l_canvas.html#a525fca9ded8253c67ce701a76bcc963e">QwtPlotGLCanvas::borderPath</a>( <span class="keyword">const</span> QRect&amp; rect )<span class="keyword"> const</span></div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_plot_abstract_canvas.html#a9642475627e053a34aa86d8eee7ee76b">canvasBorderPath</a>( rect );</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;}</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160; </div>
<div class="line"><a name="l00163"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#a6401b6d2be7ced82110ad723eaea4cbf">  163</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_g_l_canvas.html#a6401b6d2be7ced82110ad723eaea4cbf">QwtPlotGLCanvas::initializeGL</a>()</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;{</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;}</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160; </div>
<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#aabf00315a1ae0003442478996dd1c178">  168</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_g_l_canvas.html#aabf00315a1ae0003442478996dd1c178">QwtPlotGLCanvas::paintGL</a>()</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;{</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">bool</span> hasFocusIndicator =</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        hasFocus() &amp;&amp; <a class="code" href="class_qwt_plot_abstract_canvas.html#a495fd02cb4d3bef4bb34191db1f5d08c">focusIndicator</a>() == <a class="code" href="class_qwt_plot_abstract_canvas.html#af25d84f7db52c78294f0413f2c8e1981af4f3227062ae3588fb2a8650962c4236">CanvasFocusIndicator</a>;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160; </div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    QPainter painter;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160; </div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#a04f62daffa3960b08a05f03214b71bfd">testPaintAttribute</a>( <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#a91d7bb721b06f3ef68d0a64db7104f68a80885b8e4fe5d90bfd6fdf46af0508a7">QwtPlotGLCanvas::BackingStore</a> ) )</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    {</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        <span class="keyword">const</span> qreal pixelRatio = <a class="code" href="class_qwt_painter.html#abcd52c8648b02d72a44851578f3b5ed7">QwtPainter::devicePixelRatio</a>( NULL );</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        <span class="keyword">const</span> QRect rect( 0, 0, width() * pixelRatio, height() * pixelRatio );</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160; </div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        <span class="keywordflow">if</span> ( hasFocusIndicator )</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;            painter.begin( <span class="keyword">this</span> );</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160; </div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        <span class="keywordflow">if</span> ( m_data-&gt;fbo )</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        {</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;            <span class="keywordflow">if</span> ( m_data-&gt;fbo-&gt;size() != rect.size() )</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;            {</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                <span class="keyword">delete</span> m_data-&gt;fbo;</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                m_data-&gt;fbo = NULL;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;            }</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        }</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160; </div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        <span class="keywordflow">if</span> ( m_data-&gt;fbo == NULL )</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        {</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;            QGLFramebufferObjectFormat format;</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;            format.setSamples( 4 );</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160; </div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;            m_data-&gt;fbo = <span class="keyword">new</span> QGLFramebufferObject( rect.size(), format );</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;            m_data-&gt;fboDirty = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        }</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160; </div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;        <span class="keywordflow">if</span> ( m_data-&gt;fboDirty )</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;        {</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            QPainter fboPainter( m_data-&gt;fbo );</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;            fboPainter.scale( pixelRatio, pixelRatio );</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#af741999be11efb4d966d3f8cbec098d0">draw</a>( &amp;fboPainter );</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;            fboPainter.end();</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160; </div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;            m_data-&gt;fboDirty = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        }</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160; </div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="comment">            Why do we have this strange translation - but, anyway</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="comment">            QwtPlotGLCanvas in combination with scaling factor</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment">            is not very likely to happen as using QwtPlotOpenGLCanvas</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment">            usually makes more sense then.</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160; </div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        QGLFramebufferObject::blitFramebuffer( NULL,</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;            rect.translated( 0, height() - rect.height() ), m_data-&gt;fbo, rect );</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    }</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    {</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        painter.begin( <span class="keyword">this</span> );</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        <a class="code" href="class_qwt_plot_abstract_g_l_canvas.html#af741999be11efb4d966d3f8cbec098d0">draw</a>( &amp;painter );</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    }</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160; </div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    <span class="keywordflow">if</span> ( hasFocusIndicator )</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;        <a class="code" href="class_qwt_plot_abstract_canvas.html#ad38a26aca5a3b20033b34a95b97383cc">drawFocusIndicator</a>( &amp;painter );</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;}</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160; </div>
<div class="line"><a name="l00233"></a><span class="lineno"><a class="line" href="class_qwt_plot_g_l_canvas.html#ad9f603cc0eb9150cf4d6c55932f75013">  233</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_g_l_canvas.html#ad9f603cc0eb9150cf4d6c55932f75013">QwtPlotGLCanvas::resizeGL</a>( <span class="keywordtype">int</span>, <span class="keywordtype">int</span> )</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;{</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    <span class="comment">// nothing to do</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;}</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160; </div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="preprocessor">#if QWT_MOC_INCLUDE</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="preprocessor">#include &quot;moc_qwt_plot_glcanvas.cpp&quot;</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclass_qwt_painter_html_abcd52c8648b02d72a44851578f3b5ed7"><div class="ttname"><a href="class_qwt_painter.html#abcd52c8648b02d72a44851578f3b5ed7">QwtPainter::devicePixelRatio</a></div><div class="ttdeci">static qreal devicePixelRatio(const QPaintDevice *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__painter_8cpp_source.html#l01491">qwt_painter.cpp:1491</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_canvas_html_a495fd02cb4d3bef4bb34191db1f5d08c"><div class="ttname"><a href="class_qwt_plot_abstract_canvas.html#a495fd02cb4d3bef4bb34191db1f5d08c">QwtPlotAbstractCanvas::focusIndicator</a></div><div class="ttdeci">FocusIndicator focusIndicator() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l00578">qwt_plot_abstract_canvas.cpp:578</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_canvas_html_a9642475627e053a34aa86d8eee7ee76b"><div class="ttname"><a href="class_qwt_plot_abstract_canvas.html#a9642475627e053a34aa86d8eee7ee76b">QwtPlotAbstractCanvas::canvasBorderPath</a></div><div class="ttdeci">QPainterPath canvasBorderPath(const QRect &amp;rect) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l00619">qwt_plot_abstract_canvas.cpp:619</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_canvas_html_ad38a26aca5a3b20033b34a95b97383cc"><div class="ttname"><a href="class_qwt_plot_abstract_canvas.html#ad38a26aca5a3b20033b34a95b97383cc">QwtPlotAbstractCanvas::drawFocusIndicator</a></div><div class="ttdeci">virtual void drawFocusIndicator(QPainter *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l00587">qwt_plot_abstract_canvas.cpp:587</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_canvas_html_af25d84f7db52c78294f0413f2c8e1981af4f3227062ae3588fb2a8650962c4236"><div class="ttname"><a href="class_qwt_plot_abstract_canvas.html#af25d84f7db52c78294f0413f2c8e1981af4f3227062ae3588fb2a8650962c4236">QwtPlotAbstractCanvas::CanvasFocusIndicator</a></div><div class="ttdeci">@ CanvasFocusIndicator</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8h_source.html#l00039">qwt_plot_abstract_canvas.h:39</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html">QwtPlotAbstractGLCanvas</a></div><div class="ttdoc">Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8h_source.html#l00087">qwt_plot_abstract_canvas.h:88</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html_a04f62daffa3960b08a05f03214b71bfd"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html#a04f62daffa3960b08a05f03214b71bfd">QwtPlotAbstractGLCanvas::testPaintAttribute</a></div><div class="ttdeci">bool testPaintAttribute(PaintAttribute) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l00952">qwt_plot_abstract_canvas.cpp:952</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html_a15748428948a5ea5594309862c898a8c"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html#a15748428948a5ea5594309862c898a8c">QwtPlotAbstractGLCanvas::setLineWidth</a></div><div class="ttdeci">void setLineWidth(int)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l01033">qwt_plot_abstract_canvas.cpp:1033</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html_a91d7bb721b06f3ef68d0a64db7104f68a80885b8e4fe5d90bfd6fdf46af0508a7"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html#a91d7bb721b06f3ef68d0a64db7104f68a80885b8e4fe5d90bfd6fdf46af0508a7">QwtPlotAbstractGLCanvas::BackingStore</a></div><div class="ttdeci">@ BackingStore</div><div class="ttdoc">Paint double buffered reusing the content of the pixmap buffer when possible.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8h_source.html#l00110">qwt_plot_abstract_canvas.h:110</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html_a94191d6d1e982de669ea9dfcc82b6a27"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html#a94191d6d1e982de669ea9dfcc82b6a27">QwtPlotAbstractGLCanvas::setFrameShape</a></div><div class="ttdeci">void setFrameShape(QFrame::Shape)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l01011">qwt_plot_abstract_canvas.cpp:1011</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html_a9618a6dd76617768afefd23e5f16e559"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html#a9618a6dd76617768afefd23e5f16e559">QwtPlotAbstractGLCanvas::replot</a></div><div class="ttdeci">void replot()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l01093">qwt_plot_abstract_canvas.cpp:1093</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html_adb37aa5c62dc82352a9ed0c596e4e136"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html#adb37aa5c62dc82352a9ed0c596e4e136">QwtPlotAbstractGLCanvas::setFrameShadow</a></div><div class="ttdeci">void setFrameShadow(QFrame::Shadow)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l00991">qwt_plot_abstract_canvas.cpp:991</a></div></div>
<div class="ttc" id="aclass_qwt_plot_abstract_g_l_canvas_html_af741999be11efb4d966d3f8cbec098d0"><div class="ttname"><a href="class_qwt_plot_abstract_g_l_canvas.html#af741999be11efb4d966d3f8cbec098d0">QwtPlotAbstractGLCanvas::draw</a></div><div class="ttdeci">void draw(QPainter *)</div><div class="ttdoc">Helper function for the derived plot canvas.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__abstract__canvas_8cpp_source.html#l01112">qwt_plot_abstract_canvas.cpp:1112</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_a330939a56e289c42bcfbee2d82ef8347"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#a330939a56e289c42bcfbee2d82ef8347">QwtPlotGLCanvas::~QwtPlotGLCanvas</a></div><div class="ttdeci">virtual ~QwtPlotGLCanvas()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00077">qwt_plot_glcanvas.cpp:77</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_a525fca9ded8253c67ce701a76bcc963e"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#a525fca9ded8253c67ce701a76bcc963e">QwtPlotGLCanvas::borderPath</a></div><div class="ttdeci">Q_INVOKABLE QPainterPath borderPath(const QRect &amp;) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00157">qwt_plot_glcanvas.cpp:157</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_a6401b6d2be7ced82110ad723eaea4cbf"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#a6401b6d2be7ced82110ad723eaea4cbf">QwtPlotGLCanvas::initializeGL</a></div><div class="ttdeci">virtual void initializeGL() override</div><div class="ttdoc">No operation - reserved for some potential use in the future.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00163">qwt_plot_glcanvas.cpp:163</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_a7a3ee293ae9564bce107bf7575edf10d"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#a7a3ee293ae9564bce107bf7575edf10d">QwtPlotGLCanvas::invalidateBackingStore</a></div><div class="ttdeci">virtual Q_INVOKABLE void invalidateBackingStore() override</div><div class="ttdoc">Invalidate the internal backing store.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00137">qwt_plot_glcanvas.cpp:137</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_aa46f9d209bc4d7e862bfdc4b5aeb1fdb"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#aa46f9d209bc4d7e862bfdc4b5aeb1fdb">QwtPlotGLCanvas::event</a></div><div class="ttdeci">virtual bool event(QEvent *) override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00110">qwt_plot_glcanvas.cpp:110</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_aabf00315a1ae0003442478996dd1c178"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#aabf00315a1ae0003442478996dd1c178">QwtPlotGLCanvas::paintGL</a></div><div class="ttdeci">virtual void paintGL() override</div><div class="ttdoc">Paint the plot.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00168">qwt_plot_glcanvas.cpp:168</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_ac2f0b18dd1b26db455a57599049c69b6"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#ac2f0b18dd1b26db455a57599049c69b6">QwtPlotGLCanvas::paintEvent</a></div><div class="ttdeci">virtual void paintEvent(QPaintEvent *) override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00100">qwt_plot_glcanvas.cpp:100</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_ad9f603cc0eb9150cf4d6c55932f75013"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#ad9f603cc0eb9150cf4d6c55932f75013">QwtPlotGLCanvas::resizeGL</a></div><div class="ttdeci">virtual void resizeGL(int width, int height) override</div><div class="ttdoc">No operation - reserved for some potential use in the future.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00233">qwt_plot_glcanvas.cpp:233</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_adc7704723f078ff57243a2e2fc217832"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#adc7704723f078ff57243a2e2fc217832">QwtPlotGLCanvas::QwtPlotGLCanvas</a></div><div class="ttdeci">QwtPlotGLCanvas(QwtPlot *=NULL)</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00056">qwt_plot_glcanvas.cpp:56</a></div></div>
<div class="ttc" id="aclass_qwt_plot_g_l_canvas_html_af2bf82a971fcea76dab92da15a859c67"><div class="ttname"><a href="class_qwt_plot_g_l_canvas.html#af2bf82a971fcea76dab92da15a859c67">QwtPlotGLCanvas::replot</a></div><div class="ttdeci">void replot()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot__glcanvas_8cpp_source.html#l00131">qwt_plot_glcanvas.cpp:131</a></div></div>
<div class="ttc" id="aclass_qwt_plot_html"><div class="ttname"><a href="class_qwt_plot.html">QwtPlot</a></div><div class="ttdoc">A 2-D plotting widget.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__plot_8h_source.html#l00078">qwt_plot.h:79</a></div></div>
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